A set-top box

Abstract

The utility model relates to a set top box technical field especially relates to a set top box, the utility model discloses a set top box adds the tempered glass counterweight in the upper cover, utilizes the high density characteristics of tempered glass to increase the weight of set top box, avoids the displacement or dumping caused by accidental collision, promotes the stability of placement, and the tempered glass will not appear electromagnetic interference problem, also will not with the electromagnetic coupling of electrical components inside set top box, thereby avoid product abnormal, radiation exceeds standard etc. Problem, guarantee the normal work of set top box. The tempered glass counterweight is located between PCB board and upper cover inner bottom surface, so that the center of gravity of the whole set top box is in the middle, plays the role of balancing the center of gravity of set top box. And the tempered glass counterweight and PCB board, upper cover inner bottom surface all keep the avoidance space between, cooperate the buffer design of support column and washer, can absorb the vibration in the process of transportation or use, protect the PCB board solder joint from being damaged.

Description

[0001] A set-top box Technical Field

[0002] This utility model relates to the field of set-top box technology, and in particular to a set-top box. Background Technology

[0003] A digital video converter box (STB), commonly known as a set-top box or set-top box, is a device that connects a television set to an external signal source. It converts compressed digital signals into television content and displays it on the television. Signals can come from cable TV, satellite dishes, broadband networks, and terrestrial broadcasts. In addition to the images and sound provided by analog television, set-top boxes can receive digital content, including electronic program guides, internet web pages, and more. It allows users to watch digital television programs on their existing television sets and engage in interactive digital entertainment, education, and commercial activities via the internet. The main components of a typical set-top box are its internal electronic components, which are integrated onto a PCB board. To protect the PCB board, a protective casing is usually designed on the outside. Therefore, these set-top boxes are very lightweight. Since set-top boxes are typically connected to external power cables, network cables, and data cables, their light weight makes them difficult to place stably.

[0004] In such cases, the only solution is usually to increase the weight of the set-top box, for example, by adding internal counterweights to balance the weight distribution of internal components and thus improve overall stability. In this approach, the counterweights are primarily made of metal, particularly iron or tungsten alloy. However, these materials also have several drawbacks and limitations in practical applications. For instance, to achieve a minimalist and stylish appearance, the Wi-Fi / Bluetooth antennas of set-top boxes are generally designed inside the product. Metal counterweights can cause electromagnetic interference to the electrical components inside the set-top box, particularly affecting the antenna's directionality and efficiency, and may even cause unnecessary electromagnetic coupling, leading to malfunctions and excessive radiation. Furthermore, improper installation of these metal counterweights can easily cause instability in the center of the set-top box. This invention addresses these issues. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a set-top box, including an upper cover, a lower cover, and a PCB board. The upper cover is fastened onto the lower cover to form an internal installation space. The PCB board is installed in the internal installation space and fixed to the inner bottom surface of the upper cover by screws. A tempered glass counterweight is provided between the PCB board and the inner bottom surface of the upper cover. The tempered glass counterweight is provided with a plurality of mounting holes. The tempered glass counterweight is installed and fixed to the inner bottom surface of the upper cover by screws passing through the mounting holes.

[0006] In some possible embodiments, the bottom surface of the tempered glass counterweight and the top surface of the PCB board do not contact each other and are provided with a clearance space, and the top surface of the tempered glass counterweight and the inner bottom surface of the top cover do not contact each other and are provided with a clearance space.

[0007] In some possible embodiments, a first support column is provided on the inner bottom of the top cover, and the tempered glass counterweight is installed and fixed on the lower end face of the first support column by means of screws passing through the mounting holes.

[0008] In some possible embodiments, a plurality of washers are provided between the lower end face of the first support and the tempered glass counterweight.

[0009] In some possible embodiments, a second support is provided on the inner bottom of the top cover, and the PCB board is fixed to the lower end face of the second support by screws.

[0010] In some possible embodiments, the opening of the upper cover is provided with a buckle edge, the buckle edge is provided with a plurality of buckles along the circumference, and the outer edge of the lower cover is provided with a ring platform that cooperates with the buckle edge, the ring platform is provided with a plurality of snaps that cooperate with the buckles.

[0011] In some possible embodiments, a plurality of interfaces are provided on one side of the PCB board, and mounting openings that are adapted to each of the plurality of interfaces are provided on the corresponding side wall of the top cover, and the interfaces are fitted into the mounting openings.

[0012] In some possible embodiments, the end of the PCB board away from the interface is fixed to the inner bottom surface of the upper cover by screws, and the lower cover is provided with a plurality of pressure posts on the side near the PCB board, the pressure posts pressing against the back of the PCB board.

[0013] In some possible embodiments, the side of the lower cover away from the interface is fixed by screws to a pre-set connecting post inside the upper cover.

[0014] In some possible embodiments, the lower cover is provided with a plurality of heat dissipation holes.

[0015] Compared to existing technologies, the advantages of this invention are as follows: The set-top box of this invention increases its weight by adding a tempered glass counterweight inside the top cover. The high density of the tempered glass increases the set-top box's weight, preventing displacement or tipping due to accidental collisions and improving stability. Furthermore, the tempered glass does not cause electromagnetic interference or electromagnetic coupling with the electrical components inside the set-top box, thus preventing malfunctions and excessive radiation, ensuring normal operation. The tempered glass counterweight is located between the PCB board and the inner bottom surface of the top cover, centralizing the set-top box's center of gravity and balancing its weight. Moreover, clearance is maintained between the tempered glass counterweight and the PCB board, as well as the cushioning design of the support pillars and gaskets, absorbing vibrations during transportation or use and protecting the PCB board solder joints from damage. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a set-top box provided in an embodiment of the present utility model;

[0018] Figure 2 This is a partial structural schematic diagram provided for an embodiment of the present utility model;

[0019] Figure 3 An exploded view provided for an embodiment of this utility model.

[0020] Reference numerals: Top cover 10, First support column 11, Second support column 12, Fastening edge 13, Fastener head 14, Mounting opening 15, Connecting column 16, Bottom cover 20, Ring platform 21, Buckle 22, Pressing column 23, Heat dissipation hole 24, PCB board 30, Interface 31, Tempered glass counterweight 40, Mounting hole 41. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Reference Figures 1 to 3A set-top box includes an upper cover 10, a lower cover 20, and a PCB board 30. The upper cover 10 is snapped onto the lower cover 20, forming an internal installation space. The PCB board 30 is installed within the internal installation space and fixed to the inner bottom surface of the upper cover 10 with screws. A tempered glass counterweight 40 is provided between the PCB board 30 and the inner bottom surface of the upper cover 10. The tempered glass counterweight 40 has several mounting holes 41, and is fixed to the inner bottom surface of the upper cover 10 by screws passing through the mounting holes 41. Both the upper cover 10 and the lower cover 20 are made of ABS plastic and are integrally molded. The PCB board 30 integrates components such as chips, capacitors, and interfaces. This set-top box improves stability through the tempered glass counterweight, and, combined with multi-support fixing and clearance space design, balances shock resistance and heat dissipation, addressing the core defects of existing products.

[0023] Reference Figure 1 , Figure 2 and Figure 3 Four first pillars 11 are provided on the inner bottom surface of the top cover 10, arranged in a rectangular shape. The upper end of the first pillar 11 is integrally formed with the inner bottom surface of the top cover 10, and the lower end has a threaded hole. The mounting holes 41 of the tempered glass counterweight 40 correspond one-to-one with the first pillars 11. Screws are screwed through the mounting holes 41 into the threaded holes of the first pillars 11 to fix the tempered glass counterweight 40 to the inner bottom surface of the top cover 10.

[0024] A 2-3mm clearance space is maintained between the upper surface of the tempered glass counterweight 40 and the inner bottom surface of the top cover 10, and a 3-5mm clearance space is maintained between the lower surface and the upper surface of the PCB board 30. This prevents the tempered glass counterweight 40 from directly contacting the inner bottom surface of the top cover or the upper surface of the PCB board. This clearance space can accommodate air, forming an air layer to buffer vibration, and at the same time provides installation space for components on the PCB board, such as capacitors and chips, preventing components from colliding and being damaged by the tempered glass counterweight 40.

[0025] Multiple rubber washers are installed between the lower end face of the first pillar 11 and the tempered glass counterweight 40. The washers can further absorb vibration and prevent damage to the tempered glass surface when the screws are tightened, thus extending the service life of the tempered glass counterweight 40. At the same time, by increasing or decreasing the number of rubber washers on different first pillars 11, the height of each corner of the entire tempered glass counterweight 40 can be adjusted, thereby achieving the leveling of the center of gravity of the entire set-top box.

[0026] Reference Figure 2 and Figure 3Multiple second support pillars 12 are provided on the inner bottom surface of the top cover 10. These second support pillars 12 are located outside the first support pillar 11, thus avoiding the installation area of ​​the tempered glass counterweight 40 and facilitating its installation. Simultaneously, the height of the second support pillars 12 is higher than that of the first support pillar 11, ensuring a clearance space between the PCB board 30 and the tempered glass counterweight 40 after fixation. Fixing holes are provided on the edge of the PCB board 30. Screws pass through these fixing holes and are screwed into the threaded holes of the second support pillars 12, achieving a suspended fixation of the PCB board 30 and reducing the direct transmission of vibration from the outer casing to the PCB board 30.

[0027] Reference Figure 1 and Figure 3 The upper cover 10 has an integrally formed snap-fit ​​edge 13 at its opening edge, with multiple snap heads 14 evenly arranged circumferentially along the inner side of the snap-fit ​​edge 13. The snap heads 14 are integrally formed with the snap-fit ​​edge 13. The lower cover 20 has an integrally formed ring platform 21 at its top outer edge, with snap fasteners 22 corresponding to the snap heads 14 on the outer side of the ring platform 21. During assembly, the upper cover 10 is fastened onto the lower cover 20, causing the snap heads 14 and snap fasteners 22 to engage with each other, thereby achieving initial fixation of the outer shell. This structure is convenient to operate and facilitates later disassembly and maintenance.

[0028] Reference Figure 1 and Figure 3 Several interfaces 31 are soldered on one side of the PCB board 30. The interfaces 31 include HDMI interfaces, USB interfaces, network cable interfaces, etc. The corresponding side wall of the top cover 10 has an installation opening 15. The size of the installation opening 15 is adapted to the interface 31. The interface 31 is snapped into the installation opening 15, which not only realizes the positioning of the interface 31, but also prevents the interface 31 from directly pulling the PCB board 30 when subjected to force, thus protecting the solder joints between the PCB board 30 and the interface 31.

[0029] The PCB board 30 is fixed to the inner bottom surface of the upper cover 10 with screws at one end away from the interface 31. This, combined with the snap-fit ​​structure of the interface 31 and the mounting opening 15, secures both ends of the PCB board 30, improving its shock resistance. The lower cover 20 has multiple integrally formed pressure posts 23 on the side near the back of the PCB board 30. These pressure posts 23 are made of rubber and press firmly against the back of the PCB board 30, limiting its vertical movement. The rubber material of the pressure posts 23 also prevents scratching the surface of the PCB board 30.

[0030] Reference Figure 1 and Figure 2The lower cover 20 has multiple screw holes on the side away from the interface 31. A connecting post 16 is located at a corresponding position inside the upper cover 10. The connecting post 16 has threaded holes, and screws pass through the screw holes in the lower cover 20 and are screwed into the threaded holes in the connecting post 16, achieving double fixation of the outer casing. The snap-fit ​​structure ensures assembly efficiency, while the screw fixation enhances the connection strength of the outer casing and prevents loosening after long-term use. The screw holes can be sealed with rubber plugs, effectively improving the overall aesthetics of the set-top box. Specifically, the inner bottom surface of the upper cover 10 is integrally formed with a first support post 11, a second support post 12, and a connecting post 16. The mounting holes 41 of the tempered glass counterweight 40 correspond to the positions of the first support post 11, and the PCB board 30 is fixed to the second support post 12 with screws. The lower cover 20 is connected to the upper cover 10 through snap-fit ​​and screws, ensuring a secure assembly.

[0031] Reference Figure 1 and Figure 2 In order to improve the heat dissipation performance of the entire device, several heat dissipation holes 24 are opened on the bottom and sides of the lower cover 20. The heat dissipation holes 24 on the bottom are evenly distributed in the corresponding area on the outer periphery of the PCB board 30.

[0032] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A set-top box, characterized in that, The device includes an upper cover, a lower cover, and a PCB board. The upper cover is fastened onto the lower cover to form an internal mounting space. The PCB board is installed in the internal mounting space and fixed to the inner bottom surface of the upper cover by screws. A tempered glass counterweight is provided between the PCB board and the inner bottom surface of the upper cover. The tempered glass counterweight has several mounting holes. The tempered glass counterweight is installed and fixed to the inner bottom surface of the upper cover by screws passing through the mounting holes.

2. A set-top box according to claim 1, characterized in that, The bottom surface of the tempered glass counterweight and the top surface of the PCB board do not contact each other and are provided with a clearance space. The top surface of the tempered glass counterweight and the inner bottom surface of the top cover also do not contact each other and are provided with a clearance space.

3. A set-top box according to claim 1, characterized in that, A first support column is provided on the inner bottom of the upper cover, and the tempered glass counterweight is installed and fixed on the lower end face of the first support column by means of screws passing through the mounting holes.

4. A set-top box according to claim 3, characterized in that, Several washers are provided between the lower end face of the first support column and the tempered glass counterweight.

5. A set-top box according to claim 1, characterized in that, A second support column is provided on the inner bottom of the top cover, and the PCB board is fixed to the lower end surface of the second support column by screws.

6. A set-top box according to claim 1, characterized in that, The opening of the upper cover is provided with a buckle edge, and the buckle edge is provided with a plurality of buckles along the circumference. The outer edge of the lower cover is provided with a ring platform that cooperates with the buckle edge, and the ring platform is provided with a plurality of buckles that cooperate with the buckles.

7. A set-top box according to claim 1, characterized in that, The PCB board has several interfaces on one side, and the corresponding side wall of the top cover has mounting openings that are adapted to each of the interfaces. The interfaces are fitted into the mounting openings.

8. A set-top box according to claim 7, characterized in that, The end of the PCB board away from the interface is fixed to the inner bottom surface of the upper cover by screws. The lower cover is provided with several pressure posts on the side near the PCB board, and the pressure posts abut against the back of the PCB board.

9. A set-top box according to claim 7, characterized in that, The side of the lower cover away from the interface is fixed to a pre-set connecting post inside the upper cover by screws.

10. A set-top box according to claim 1, characterized in that, The lower cover is provided with several heat dissipation holes.

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